using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Infragistics.UltraChart.Shared.Styles;
using Infragistics.UltraChart.Resources.Appearance;
using Infragistics.UltraChart.Core.Layers;

namespace LineChart
{
    public partial class LineSample : Form
    {
        AxisItem axisX;
        int i;
        XYSeries series1, series2;
        public LineSample()
        {
            InitializeComponent();
        }

        private void LineSample_Load(object sender, EventArgs e)
        {
            this.ultraChart1.ChartType = ChartType.Composite;
            this.ultraChart1.Axis.X.ScrollScale.Visible = true;
            this.ultraChart1.Axis.X.ScrollScale.Scroll = 1.0;
            ChartArea myChartArea = new ChartArea();
            this.ultraChart1.CompositeChart.ChartAreas.Add(myChartArea);
            AxisItem axisY = new AxisItem();
            axisY.OrientationType = AxisNumber.Y_Axis;
            axisY.DataType = AxisDataType.Numeric;
            axisY.Labels.ItemFormatString = "<DATA_VALUE:#>";

            axisX = new AxisItem();
            axisX.OrientationType = AxisNumber.X_Axis;
            axisX.DataType = AxisDataType.Numeric;
            axisX.Labels.ItemFormatString = "<DATA_VALUE:#>";
            axisX.Labels.Orientation = TextOrientation.VerticalLeftFacing;

            axisX.ScrollScale.Scroll = 1.0;
            axisX.ScrollScale.Visible = true;
            axisX.TickmarkInterval = 1;
            axisX.TickmarkStyle = AxisTickStyle.DataInterval;

            myChartArea.Axes.Add(axisY);
            myChartArea.Axes.Add(axisX);
            series1 = new XYSeries();
            series2 = new XYSeries();
            series1.Label = "Series 1";
            series2.Label = "Series 2";
            this.ultraChart1.CompositeChart.Series.Add(series1);
            this.ultraChart1.CompositeChart.Series.Add(series2);

            series1.PEs.Add(new PaintElement(Color.Green));
            series2.PEs.Add(new PaintElement(Color.Red));

            ChartLayerAppearance myScatterLayer = new ChartLayerAppearance();
            myScatterLayer.ChartType = ChartType.ScatterChart;
            ((ScatterChartAppearance)myScatterLayer.ChartTypeAppearance).ConnectWithLines = true;
            //((ScatterChartAppearance)myScatterLayer.ChartTypeAppearance).Icon = SymbolIcon.Circle;
            //((ScatterChartAppearance)myScatterLayer.ChartTypeAppearance).IconSize = SymbolIconSize.Medium;
            myScatterLayer.ChartArea = myChartArea;
            myScatterLayer.AxisX = axisX;
            myScatterLayer.AxisY = axisY;
            myScatterLayer.Series.Add(series1);
            myScatterLayer.Series.Add(series2);
            this.ultraChart1.CompositeChart.ChartLayers.Add(myScatterLayer);

            CompositeLegend myLegend = new CompositeLegend();
            myLegend.ChartLayers.Add(myScatterLayer);
            myLegend.Bounds = new Rectangle(0, 75, 20, 25);
            myLegend.BoundsMeasureType = MeasureType.Percentage;
            myLegend.PE.ElementType = PaintElementType.Gradient;
            myLegend.PE.FillGradientStyle = GradientStyle.ForwardDiagonal;
            myLegend.PE.Fill = Color.CornflowerBlue;
            myLegend.PE.FillStopColor = Color.Transparent;
            myLegend.Border.CornerRadius = 10;
            myLegend.Border.Thickness = 0;
            this.ultraChart1.CompositeChart.Legends.Add(myLegend);
        }

        private void timer1_Tick_1(object sender, EventArgs e)
        {
            i += 1;
            Random rand = new Random();
            series1.Points.Add(new XYDataPoint(i, rand.Next(30), "Point A", false));
            series2.Points.Add(new XYDataPoint(i, rand.Next(28), "Point B", false));
        }
    }
}

Hi,

Thanks for provided information, but the mentioned behavior is expected and it is by default.

keanwey said:

However, I discovered that the points plotted as my timer start to fill in with random number, it never plot exactly at the vertical grid. Sometimes it will bit towards the right of the vertical line

axisX.TickmarkInterval = 1;

axisX.TickmarkStyle = AxisTickStyle.DataInterval;

I already discuss the same scenario in another forum thread - http://forums.infragistics.com/forums/t/65088.aspx , so please take a look there for more information. Also you could find few samples.

Maybe one possible approach could be if you are using for example:

ultraChart1.Tooltips.FormatString = "<SERIES_LABEL>" + Environment.NewLine + "<ITEM_LABEL>: <DATA_VALUE:0.##>"

Let me know if you have any questions.

Regards